Phylum “Actinobacteria”, Class Actinobacteria, Order Bifidobacteriales, Family Bifidobacteriaceae, Genus Bifidobacterium,
Bifidobacterium catulorum Modesto, Michelini, Oki, Biavati, Watanabe and Mattarelli, 2018.
Gram-positive rods of various shapes, forming a branched structure with a ‘Y’ at the
end. Non-motile. Non-spore-forming.
Colonies are white, smooth, opaque, 1.0-2.0 mm in diameter after 3 days of
anaerobic incubation on TPY agar. Non-haemolytic. Can grow at 22-48 ºC, optimally
at 37 ºC, not at 20 or 44 ºC. Grows at pH 4.0-8.0, optimally at pH 7.0. Grows under
aerophilic and microaerophilic conditions.
Isolated from faeces of a baby of the common marmoset (Callithrix jacchus).
- Modesto M, Michelini S, Oki K, Biavati B, Watanabe K and Mattarelli P, 2018. Bifidobacterium catulorum sp. nov. a novel taxon from
the faeces of baby common marmoset (Callithrix jacchus). Int J Syst Evol Microbiol 68, 575-581.
Description is based on API 50CH and API Rapid ID32 (bioMerieux) results.
Positive results for alanine arylamidase, alkaline phosphatase, arginine arylamidase, aesculin hydrolysis, alpha- and
beta-galactosidase, alpha- and beta-glucosidase, glycine arylamidase, histidine arylamidase, leucine arylamidase, proline
arylamidase, phenylalanine arylamidase, serine arylamidase (weak), tyrosine arylamidase, acid production from L-arabinose,
D-arabitol, D-fructose (weak), D-glucose, lactose, maltose, D-mannitol, D-mannose, melezitose, methyl alpha-D-glucopyranoside,
methyl beta-D-xylopyranoside (weak), raffinose, D-ribose, D-sorbitol, sucrose, trehalose, turanose, and D-xylose.
Negative results for alpha-arabinosidase, arginine dihydrolase, catalase, cysteine arylamidase, esterase lipase, alpha-fucosidase,
gelatin hydrolysis, beta-glucuronidase, indole production, lipase, alpha-mannosidase, nitrates reduction,
N-acetyl-beta-glucosaminidase, trypsin, alpha-chymotrypsin, oxidase, urease, valine arylamidase, acid production from D-adonitol,
amygdalin, D-arabinose, L-arabitol, arbutin, cellobiose, dulcitol, erythritol, D- and L-fucose, D-galactose, gentibiose, gluconate,
glycogen, glycerol, inulin, inositol, 2- and 5-ketogluconate, D-lyxose, melibiose, methyl alpha-D-manopyranoside, N-acetylglucosamine,
rhamnose, salicin, L-sorbose, starch, D-tagatose, xylitol, and L-xylose.
(c) Costin Stoica